Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switch Output (0 and 1)
Detection Area	Approx. 40mm x 16mm
Comparator Chip	LM393
Sensitivity Adjustment	Via Potentiometer
PCB Size	63mm x 20mm x 8mm
Mounting Hole Diameter	3.0mm
Interface Type	3-Pin PH2.0 Connector
Application Scope	Water Level Detection, Rain Alarm, Leak Detection
Package Contents	1x Water Level Sensor Module

6 reviews

Anonymous

Mar 22, 2026

Rating: 4/5

Solid performance for leak detection

Using this under my sink as an early warning system. It triggers immediately upon contact with water. The only minor downside is that the exposed traces might corrode over years of constant exposure, but for the price, it's replaceable.

Anonymous

Mar 12, 2026

Rating: 5/5

Easy to use for beginners

As someone new to sensors, I found this very straightforward to connect to my microcontroller. The documentation online is plentiful, and the module itself is robust. No issues after two weeks of continuous testing.

Anonymous

Mar 07, 2026

Rating: 5/5

Exceeded expectations

Fast shipping and the product arrived in perfect condition. The sensor is sensitive enough to detect even a single large droplet. I've tested it with both tap water and distilled water, and it performs consistently.

Anonymous

Mar 04, 2026

Rating: 4/5

Good value, but needs careful calibration

The module is well-built and the soldering points are clear. It took me a few minutes to get the threshold right using the blue potentiometer, but once set, it detects droplets instantly. Great for the price.

Anonymous

Mar 02, 2026

Rating: 5/5

Perfect for my Arduino rain alarm project

This sensor works exactly as described. The sensitivity potentiometer makes it very easy to calibrate for different water conditions. I used it to build a simple rain alert system, and the digital output is clean and reliable.

Anonymous

Mar 01, 2026

Rating: 5/5

Reliable depth detection

I integrated this into a small tank monitoring system. It handles varying water depths well. The LM393 comparator ensures stable switching without too much noise. Highly recommended for DIY electronics.

5 FAQ

Q: What is the maximum current consumption of this module?

A: The module typically consumes around 20mA when active. The standby current is significantly lower, making it suitable for battery-powered projects with sleep modes.

Q: Does this module come with connecting wires?

A: No, the package includes only the sensor module itself. You will need to solder your own wires or use a compatible 3-pin jumper cable separately.

Q: Is the sensor waterproof or just water-resistant?

A: The sensing area (the exposed gold traces) is designed to be in contact with water, but the electronic components on the back of the PCB are not waterproof. You should protect the component side from moisture.

Q: Can this sensor be used directly with a Raspberry Pi GPIO?

A: Yes, since the module operates at 3.3V to 5V and provides a digital output, it is compatible with Raspberry Pi GPIO pins. Just ensure you connect the VCC to the 3.3V or 5V pin accordingly.

Q: Can I use this to measure the exact level of water in a tank continuously?

A: This specific module provides a digital switch output (high/low) based on a threshold. It indicates if water is present at the sensor's location but does not provide an analog reading for continuous level measurement. For continuous levels, you would need an ultrasonic or pressure sensor.

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